Publication date: Available online 1 November 2017
Source:Radiotherapy and Oncology
Author(s): Dan Ou, Ingrid Garberis, Julien Adam, Pierre Blanchard, France Nguyen, Antonin Levy, Odile Casiraghi, Philippe Gorphe, Ingrid Breuskin, François Janot, Stephane Temam, Jean-Yves Scoazec, Eric Deutsch, Yungan Tao
Background and purposeThe aim of the present study was to investigate the role of three hypoxia-related biomarkers in patients with locally advanced head and neck squamous cell carcinoma (HNSCC) treated with concurrent chemoradiotherapy (3-weekly cisplatin) or bioradiotherapy (weekly cetuximab).Material and methodsIn tumor tissue material from 100 patients with known HPV status, we evaluated the extent of tumor necrosis, the expression level of CA-IX and the microvascular density (MVD) measured as the density of CD34+ vascular structures. The correlations between biomarker expressions and clinicopathological characteristics and treatment outcomes were analyzed.ResultsWe found a significant correlation of MVD with UICC stage (p = 0.02) and T classification (p = 0.05), of CA-IX with UICC stage (p = 0.03) and N classification (p = 0.04) and a significant inverse correlation of MVD with CA-IX expression (r = −0.22, p = 0.03). Multivariate analysis showed that low MVD combined with high CA IX-expression was a significant independent prognostic factor for worse loco-regional control (HR = 2.6, 95%CI 1.1–5.0, p = 0.02) in the whole population but not in the p16+ subgroup. Patients treated with CRT had a better LRC than those with BRT independent of MVD or CA-IX expression.ConclusionsThe combination of MVD and CA-IX expression might give additional prognostic information in HNSCC patients with known HPV status.
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